Hello, webm is the new Open Source Video Codec, is it possible to play these files (.webm) in the Preview and fullscreen. This would be fantastic. Is it possible to control the used codecs in xnview, which player is internally used ?

Hi, I just downloaded lastest version (2.30) but this still isn't working. However I think I know how to make it work with the ffmpeg library as it seems to support webm.

I did some testing by renaming some *.webm files to other common video format extensions like *.mpg or *.flv and the thumbnail/image is generated and shows up as expected in thumbnail, preview and open.
So all that needs to happen is that xnview needs to add .webm as a valid file extension for generating thumbnails/images using ffmpeg, and the problem is solved.

I tried to do this manually by adding webm to Tools > Options > File List > Custom Files but this didn't work, so I assume the 'ffmpeg whitelist' or whatever is internal somewhere.

Please add webm to the ffmpeg list so it is supported by thumbnails & previews. I would assume this is a pretty simple change?

Strobe wrote:Please add webm to the ffmpeg list so it is supported by thumbnails & previews. I would assume this is a pretty simple change?

Not all XnView users also have FFmpeg, and XnView is mainly a picture viewer/organizer/editor, other media (audio, video, vector graphics) are not exactly in scope for XnView. Suggestion, get and install Babelsoft Windows Media Preview, it uses a builtin libavcodec, a library also used by FFmpeg. This media preview software can handle all formats (video, audio, image) supported by FFmpeg as of April, 2014.

Interestingly media preview shows thumbnails for DPX, JLS, PAM, PCX, PGM, PPM, and SGI if you say so (manual configuration), while XnView can open the images, but doesn't create thumbnails. Two odd cases are CIN and WebP: The XnView shell extension supports CIN (created by XnView), but XnView does not create thumbnails for CIN. For WebP it's the other way around, the shell extension does not support WebP, but XnView can read/write/thumbnail it.